8i4 



DEPTHS OF THE OCEAN 



Gravitiilional attraction of land-masses, 130 



"Great Northern," The, 19 



Greenland Polar current, 244 



Green mud, 161, 162, 167, 169, 171, 1S9, 

 198 

 sand, 8, 148, 162, 167, 171, 189 



Growth of fishes, 755-771 



Gulf Stream, 3, 100, 107, 114, 115, 117, 

 118, 120, 122, 124, 194, 207, 213, 214, 

 223, 230, 240, 242, 244, 259, 261, 270, 

 276, 281, 296, 298, 299, 300-306, 457, 

 458, 459, 531, 532, 534, 574, 634, 635, 

 641, 69S, 704, 707, 708, 72S, 776 



Gulf- weed fauna, 91 



Gulls, 124, 712 



Gurnard, 71, 79, 441, 442, 443, 448, 451 



Gymnodontes, 615 



Gymnosomata, 587, 588, 589 



Gypsum {sed Calcium sulphate) 



Haddock, 440, 441, 442, 443, 444, 448, 451, 



452, 453, 454, 455, 456, 646, 647, 648 

 eggs, no. III 

 larva;, no, 1 1 1, 646 

 Hair type of suspension organs, 315-316 

 Hake, 64, 69, 71, 77, 79, 440, 44i, 442, 



443, 444, 448, 449, 451, 452, 454, 



635 

 Halacarids, 468 

 Halibut, 55, 440, 441, 442, 444, 446, 448, 



451, 452, 454, 455, 456 

 Halosaurida;, 396, 414 

 Hand-line fishing (see Line-fishing) 

 " Hansa," The, 260 

 Haplomi, 389, 396, 605, 613 

 Hardanger fjord, 481 

 Harling fishing, 636 

 Harpoons taken in blue whales, 714 

 " Hauch," The, 662 

 Helland-Hansen's photometer, 93, 94, 249- 



252 

 Hemiptera, 587 



Hemp lines for apparatus, 23-31, 21 1 

 " Henry Holmes," The, 20 

 Hensen's plankton net, 37, 45, 358, 359 

 Hermit crabs, 465, 486, 495, 496, 497, 498, 



500 

 Herrings, 55, 448, 635, 645, 646, 647-648, 



663, 699, 712, 714, 715, 716, 755, 



758, 759, 764, 765, 766, 767, 76S, 779, 



782 

 Heteromi, 389, 396 

 Heteropods, 163, 164, 167, 172-173 

 Hexactinellida, 524 

 " Hirondelle," The, 14 

 Histioteuthida;, 596 

 Hjort Deep, 196 

 Holbaek fjord, 756 

 Holocephali, 388, 393-394 

 Holopelagic forms, 562 

 Holoplanktonic forms, 562 



Holothurians, 62, 63, 76, 81, 87, 95, 120, 

 121, 418, 419, 420, 429, 430, 473, 490, 

 523, 538, 545, 575, 717 



" Holsatia," The, 773, 774 



Ilooke's sounding-machine and water-bottle, 

 2, 209 



HoplophoridK, 5S5 



Horse-mackerel, 77, 89, 98, 609, 633. 635, 

 646, 747 



Hydrographical Bureau, Washington, 215 

 sections, 84, 107, no, 115, 124, 240, 

 277, 379, 694, 695, 696 



Ilydroid polyps [see Zoophytes) 



Ilydroids, 9, 103, 418, 419, 426, 462, 467, 

 468, 469, 470, 472, 474, 477, 479, 483, 

 484, 485, 487, 497, 491, 494, 498, 506, 

 507, 511, 512, 513, 521, 522, 525, 529. 

 534, 568 



HydromedusK, 338, 562, 568, 574, 598 



Hydrometer, 236 



Hydrosphere, 129 



Hyperida;, 583 



Icebergs, 115, 116, 154, 205, 207, 208, 259 

 Ice boundaries, 638 

 Ice-drift, 207 



Iceland Polar current, 124, 300, 534 

 Indian Ocean, area of, 138, 139 

 continental shelf and slope of, 137 

 deepest sounding in, 18, 132 

 deeps of, 139, 140, 141, 142 

 depths of, 131, 132, 138, 139, 141, 142 

 number of soundings in, 1 3 1 

 "Ingolf," The, 16, 434, 533, 536, 541, 546, 



652 

 Inorganic materials in marine deposits, 151 

 Insecta, 587, 738 

 " International," The, 20 



International Council for the exploration of 

 the sea, v, 20, 300, 310, 439, 440, 

 732, 759 

 Invertebrate bottom fauna, 457-560 

 " Investigator," The, 19 

 Ionic dissociation of sea-water, 175 

 Iron in sea-water, 150, 153, 154, 155, i^^, 

 175, 186, 187, 188, 189, 190, 191, 192 

 concretions in marine deposits, 19 1 

 and manganese nodules (see Manganese 

 nodules) 

 " Isabelita," The, 76 

 Islands of the Norwegian West Coast, fauna 



of, 460-476 

 Isopoda, 506, 520, 521, 524, 530, 535, 583, 

 584, 654 



"Jeanette," The, 259 



Jeffrey Deep, 142 



Jelly-fish (see Medusce and Siphonophonv) 



"John Pender," The, 19 



Josephine Bank, 57 



Jugulares, 410 



